Suction-elevator



(No ModelQ) i H. R. DULANY.

SUCTION ELEVATOR.

o. 251,844. S Patented Jan. 3, 1882."

V ATTORNEYS;

WITNESSES:

v UNITED STATES PATENT OFFICE.

HENRY R. DULANY, OF ALEXANDRIA, LOUISIANA.

SUCTION-ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 251,844, dated January 3, 1882,

Application filed August 24, 1881. (No model.)

To all whom it may concern Be it known that I, HENRY R. DULANY, of Alexandria-,in the parish of Rapides and State of Louisiana, have invented a new and Improved Suction-Elevator, of which the following is a full, clear, and exact description.

The object of my invention is to provide a suction device for elevating sand, or for elevatingsugar, mortar, or similar substances from large vats, holes, or tanks, which device shall be self-acting.

The invention consists principally of a large inverted bucket provided with a piston-head, the vessel being provided at the top with suitable air-valves,.the pistonrod passing through the center of the top of the'vessel, and being provided with notches adapted to engage with a spring-actuated clutch for holding the pistonhead when forced up by the material to be raised.

y The invention further consists in the details of construction of the device, whereby the same is adapted for hand use for raising flour, butter, lard,and similar substances; and also in the combination and arrangement of parts, as hereinafter more full y described and claimed.

In the accompanying drawings, Figure 1 represents a vertical section of myimproved suction-clevator built upon a large scale. Fig. 2 is a plan view of the same, and Fig. 3 is a plan view of the vessel built upon a small scale for hand use.

Similar letters of reference indicate corresponding parts.

A represents the bucket, which is preferably cylindrical in form, and B represents the piston-head placed inithe vessel. The top of the bucket is perforated at a, which perforation is closed from the outside by the valve a. The piston-rod b passes up through the top of the bucket, and is formed with the notches c, with which the spring-actuated catch D engages for holding the'piston-head at any desired point, or for holding it when pressed up by the material, as hereinafter described. The springactuated catch D is made close-fitting, so as to close the central opening in the top of the bucket, to prevent the admission of air into the vessel after the piston head has been raised and before the discharge of the load.

When built upon a large scale the bucket is provided with the bail E, to which the rope F may be attached for raising and lowering the bucket, which rope may pass over the pulley secured at the end of the horizontal arm g of the upright post or way G, which is provided at the top with the pulley f. When this post G and the pulley and rope are used the yoke H, which clasps the post, should be secured around the vessel, as shown, and the friction- 6o rollers h h should be provided for guiding the bucket and for reducing the friction upon the post.

When built upon a suitable scale for raising sugar from vats by hand, in place of the yoke H, the top of the bucket is provided with the loops j j, through which the cross-bars J J pass, to serve as handles for lowering and raising the bucket.

In use the bucket is to be lowered into the material to be raised, which, as it enters the bucket, will force the piston B up into the bucket, causing the air above it to be forced out through the valved openinga. When the bucket has sunk a sufiicient depth into the material the bucket has then only to be raised, the load being retained in the bucket by atmospheric pressure exerted at the mouth of the bucket.

In order to discharge the load from the buck- 8c et, the springcatch is moved out of engagement with the notches of the pitman-rod b and the valve a lifted, which will admit air above the piston to fill the vacuum formed by the downward movement of the load out of the bucket. In raising the valve the piston-head may be forced down and the load discharged by pressure upon the piston rod b.

When made on a small scale for hand use the piston may be omitted, if desired, using only the valve for retaining and discharging the load; and when constructed in this manher the buckets or cups may be made of different sizes to contain different quantities, as a pound or two pounds, or a quart or two quarts,

the piston by means of the spring-catch and the notches of the piston at did'ercnt positions in the bucket or cup as the piston is forced up.

Having thus described myinvention,Iclaim piston-rod b, substantially as and for the puras new and desire to secure by Letters Patentposes set forth.

1. The device herein shown and described 3. Theinverted bucket or cup provided with I 5 for elevating substances, consisting of the inthe self-acting piston B, in combination with 5 vertcd bucket or cup A, containing; the selfthe yoke II, post G, arm 9, pulleys f and f,

acting piston B, the top of the bucket or cup rope F, and hail E, substantially as and for being provided with the valved opening a, subthe purposes set forth. stantially as and for the purposes set forth.

2. The inverted bucket or cup A, provided HENRY ROZIER DULANY' I0 with the valved opening a, and with the spring- Witnesses:

actuated catch D, in combination with the self- L. T. DULANY,

acting piston B, provided with the notched E. V. MARYE. 

